Finding the Fourth Proportional to 13,520.75, 18,658.59 and 7,552.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,520.75 : 18,658.59 = 7,552.42 : x
2. Step 2: Convert to fraction form
   13,520.75/18,658.59 = 7,552.42/x
3. Step 3: Cross multiply
   13,520.75x = 18,658.59 × 7,552.42
4. Step 4: Simplify right side
   13,520.75x = 140,917,508.29
5. Step 5: Solve for x
   x = 140,917,508.29/13,520.75
6. Step 6: Final answer
   x = 10,422.31